Coupling.



F. J. BORDEAUX.

couPLlNG. v APPLICATION FILED`APR.23| 1915.

1,174,473. y l patmdmnmm 'r COLUMNA PLANOGRAPH co., WASHINGTON D CUETTED STATES PATENT OEETOE.

FOSTER J'. BORDEAUX, OF BOSTON, MASSACHUSETTS, AsSTGNo-E. TO AUTOMATICAPPLTANOE COMPANY, OE BOSTON, MASSACHUSETTS, AV CORPORATION OFMASSACHUSETTS.

OOUPLING.

Patented Mar. 7, 1916.

Application filed April 23, v1915. Serial No. 23,497.

To all whom t may concern.'

Be it known that I, FOSTER J. BORDEAUX, a citizen of the United States,and resident of Boston, in the county of Suffolk and State ofMassachusetts, have invented new and useful Improvements in Couplings,of which the following is a specification.

This invention relates to couplings, and more particularly toga couplingfor an air pump and the valves of pneumatic tires.

Its object is to provide a coupling for this purpose which can bequickly and easily placed in position over the valve stock and valve ofthe tire, and when in operative position eectively prevents leakage ofthe air.

Referring to the drawings which illustrate an embodiment of myinvention, Figure l is a side elevation of my improved co-upling; Fig. 2is a bottom view thereof; Fig. 3 is a section on the line 3-3,` Fig. 1;Fig. 4 is a section onthe line 4-4, Fig. 2; Fig. 5 is a sectional viewon a plane at right angles to Fig. 4; Fig. 6 is a section on the line 66, Fig. l; Fig. 7 is a perspective view of one of the shell members;Fig. 8 is a rear elevation of the coupling with the pipe removed; Fig. 9is a perspective view of another of the shell members; and Fig.y 10 f isa perspective view of thehead.

The casing or shell of the coupling consists of the two members A and B,rigidly fastened together and preferably cylindrical as shown. The Outeror cap member A has a skirt A extending part way around its peripheryand provided with a pair of flaring arms A2. Preferably, as shown, saidskirt and arms are formed by slitting the l metal and bending it back,thus forming an opening A3 through the side of the member A.

The inner shell member B which is Open at both ends, has an aperture orslot B in its side wall, and a vertical slot B2 connecting therewith. Atits bottom is a holding flange B3, and screw holes b are provided whichregister with the screw holes a of the cap member A when the shellmembers are assembled.

C is the head of smaller diameter than the shell member B, provided onits top with a cam D, and having a laterally extending connecting nippleE adapted to be inserted into the tubing K which in turn is connected toan air pump. Within said Shell member B and between said flange B3 andthe end or mouth of head C, is a ring or sleeve F of rubber or similarcompressible material.

In assembling the coupling, the compressible ring F is firstplacedwvithin the top engages the screwv S so that said screw serves thedouble function of a fastening for the telescoping shell members and acam follower. When the cam follower S rests on the lowermost parts ofthe cam surfaces D the compressible sleeve F is in extended ornormal'position, as shown in Fig. 4.

In use, the coupling having been placed over the valve stock of thetire, the-...user

The head C is then inserted into Said grasps the arms A2 with thumb andfinger and rotates the shell to the right. This ro'- tary movementcauses the cam follower S to ride upward upon the cams D, thus forcingthehead C and lip B? toward each other and compressing the ring F asshown in Fig. 5, so that it will bulge Or Swell and makes intimatecontact with the valve stock of the tire forming a tight seal therewithand preventing leakage of the air. v

My improved coupling is of simple construction, can be'vreadily andeconomically manufactured, and furnishes efficient means for preventingleakage of the air between the pump and the tire valve. The valve stockto which the coupling is applied, is usually screw threaded, and theslight rotation of the shell in applying the coupling not onlycompresses sleeve F about said threaded valve stock but valso tends toScrew the compressed sleeve F downward a little upon the valve stock,thus still further insuring a tight seal between the sleeve F and thevalve stock.

I claim:

A coupling comprising a shell of two telescoping members, one of saidmembers havsaid shell compresses said member between ing a skirt andlaterally extending arms and said head and said flange. y l0 the otherhaving a slot andV aholding 'flange,` Signed by me at Boston',Massachusetts,

a head within said shell having a cam and a this 21st day of April,1915.

connecting member projecting from said FOSTER J. BORDEAUX.

slot, a oompressible member between said Witnesses: Y

head and said holding flange, and said shell CHARLES D. WOODBERRY,

having a cam follower whereby rotation of RICHARD W. HALL.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C. v

